Brazilian scientists have announced the discovery of a new subspecies of monkey, the Saguinus fuscicollis mura, discovered in the Amazon. Though it was originally spotted by scientists in 2007, the discovery was just published in the International Journal of Primatology last month.

The very small subspecies, which usually weighs just 350 grams and stands 23 centimeters tall, was found along the BR-319, a defunct highway that connects Porto Velho, in Rondônia, with Manaus, in Amazônia. The monkey’s habitat is located between the Madeira River and Purus River, right near the abandoned road.

The subspecies is named after the Mura tribe of indigenous Brazilians who live in the area. It eats mostly insects and fruit, and can live in dense forest as well as open areas.

However, the Brazilian government plans to start reconstructing the nearby highway as a part of a nationwide development plan. Also, there are several industrial plants being constructed in the area. Scientists fear that the newly discovered monkey could be in danger of disappearing quickly, if its habitat is endangered by development.